1 Matching Annotations
- Sep 2021
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eng.libretexts.org eng.libretexts.org
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The first modern-day mobile phone was invented in 1973
Wow, Ialway assume the first phone was from att&t in the 1980
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The first modern-day mobile phone was invented in 1973
Wow, Ialway assume the first phone was from att&t in the 1980